/**
 * Copyright (C) 2002-2015   The FreeCol Team
 * <p>
 * This file is part of FreeCol.
 * <p>
 * FreeCol is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 * <p>
 * FreeCol is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * <p>
 * You should have received a copy of the GNU General Public License
 * along with FreeCol.  If not, see <http://www.gnu.org/licenses/>.
 */

package net.sf.freecol.client.gui.panel;

import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.Transferable;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.logging.Logger;

import javax.swing.JComponent;
import javax.swing.TransferHandler;


/**
 * A DropListener should be attached to Swing components that have a
 * TransferHandler attached.  The DropListener will make sure that the
 * Swing component to which it is attached can accept draggable data.
 */
public final class DropListener extends MouseAdapter
{

    @SuppressWarnings( "unused" )
    private static final Logger logger = Logger.getLogger( DropListener.class.getName( ) );

    /**
     * Gets called when the mouse was released on a Swing component
     * that has this object as a MouseListener.
     *
     * @param e The event that holds the information about the mouse click.
     */
    @Override
    public void mouseReleased( MouseEvent e )
    {
        Clipboard clipboard = Toolkit.getDefaultToolkit( ).getSystemClipboard( );
        Transferable clipData = clipboard.getContents( clipboard );
        if ( clipData != null )
        {
            if ( clipData.isDataFlavorSupported( DefaultTransferHandler.flavor ) )
            {
                JComponent comp = ( JComponent ) e.getSource( );
                TransferHandler handler = comp.getTransferHandler( );
                handler.importData( comp, clipData );
            }
        }
    }
}
